Willy Tarreau [Wed, 12 Sep 2018 05:36:35 +0000 (07:36 +0200)]
net/appletalk: fix minor pointer leak to userspace in SIOCFINDIPDDPRT
Fields ->dev and ->next of struct ipddp_route may be copied to
userspace on the SIOCFINDIPDDPRT ioctl. This is only accessible
to CAP_NET_ADMIN though. Let's manually copy the relevant fields
instead of using memcpy().
BugLink: http://blog.infosectcbr.com.au/2018/09/linux-kernel-infoleaks.html
Cc: Jann Horn <jannh@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Hemminger [Thu, 13 Sep 2018 15:03:43 +0000 (08:03 -0700)]
hv_netvsc: fix schedule in RCU context
When netvsc device is removed it can call reschedule in RCU context.
This happens because canceling the subchannel setup work could (in theory)
cause a reschedule when manipulating the timer.
To reproduce, run with lockdep enabled kernel and unbind
a network device from hv_netvsc (via sysfs).
[ 160.682011] WARNING: suspicious RCU usage
[ 160.707466] 4.19.0-rc3-uio+ #2 Not tainted
[ 160.709937] -----------------------------
[ 160.712352] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section!
[ 160.723691]
[ 160.723691] other info that might help us debug this:
[ 160.723691]
[ 160.730955]
[ 160.730955] rcu_scheduler_active = 2, debug_locks = 1
[ 160.762813] 5 locks held by rebind-eth.sh/1812:
[ 160.766851] #0:
000000008befa37a (sb_writers#6){.+.+}, at: vfs_write+0x184/0x1b0
[ 160.773416] #1:
00000000b097f236 (&of->mutex){+.+.}, at: kernfs_fop_write+0xe2/0x1a0
[ 160.783766] #2:
0000000041ee6889 (kn->count#3){++++}, at: kernfs_fop_write+0xeb/0x1a0
[ 160.787465] #3:
0000000056d92a74 (&dev->mutex){....}, at: device_release_driver_internal+0x39/0x250
[ 160.816987] #4:
0000000030f6031e (rcu_read_lock){....}, at: netvsc_remove+0x1e/0x250 [hv_netvsc]
[ 160.828629]
[ 160.828629] stack backtrace:
[ 160.831966] CPU: 1 PID: 1812 Comm: rebind-eth.sh Not tainted 4.19.0-rc3-uio+ #2
[ 160.832952] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v1.0 11/26/2012
[ 160.832952] Call Trace:
[ 160.832952] dump_stack+0x85/0xcb
[ 160.832952] ___might_sleep+0x1a3/0x240
[ 160.832952] __flush_work+0x57/0x2e0
[ 160.832952] ? __mutex_lock+0x83/0x990
[ 160.832952] ? __kernfs_remove+0x24f/0x2e0
[ 160.832952] ? __kernfs_remove+0x1b2/0x2e0
[ 160.832952] ? mark_held_locks+0x50/0x80
[ 160.832952] ? get_work_pool+0x90/0x90
[ 160.832952] __cancel_work_timer+0x13c/0x1e0
[ 160.832952] ? netvsc_remove+0x1e/0x250 [hv_netvsc]
[ 160.832952] ? __lock_is_held+0x55/0x90
[ 160.832952] netvsc_remove+0x9a/0x250 [hv_netvsc]
[ 160.832952] vmbus_remove+0x26/0x30
[ 160.832952] device_release_driver_internal+0x18a/0x250
[ 160.832952] unbind_store+0xb4/0x180
[ 160.832952] kernfs_fop_write+0x113/0x1a0
[ 160.832952] __vfs_write+0x36/0x1a0
[ 160.832952] ? rcu_read_lock_sched_held+0x6b/0x80
[ 160.832952] ? rcu_sync_lockdep_assert+0x2e/0x60
[ 160.832952] ? __sb_start_write+0x141/0x1a0
[ 160.832952] ? vfs_write+0x184/0x1b0
[ 160.832952] vfs_write+0xbe/0x1b0
[ 160.832952] ksys_write+0x55/0xc0
[ 160.832952] do_syscall_64+0x60/0x1b0
[ 160.832952] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 160.832952] RIP: 0033:0x7fe48f4c8154
Resolve this by getting RTNL earlier. This is safe because the subchannel
work queue does trylock on RTNL and will detect the race.
Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Tue, 11 Sep 2018 21:22:23 +0000 (14:22 -0700)]
net_sched: notify filter deletion when deleting a chain
When we delete a chain of filters, we need to notify
user-space we are deleting each filters in this chain
too.
Fixes: 32a4f5ecd738 ("net: sched: introduce chain object to uapi")
Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Juergen Gross [Tue, 11 Sep 2018 07:04:48 +0000 (09:04 +0200)]
xen/netfront: don't bug in case of too many frags
Commit
57f230ab04d291 ("xen/netfront: raise max number of slots in
xennet_get_responses()") raised the max number of allowed slots by one.
This seems to be problematic in some configurations with netback using
a larger MAX_SKB_FRAGS value (e.g. old Linux kernel with MAX_SKB_FRAGS
defined as 18 instead of nowadays 17).
Instead of BUG_ON() in this case just fall back to retransmission.
Fixes: 57f230ab04d291 ("xen/netfront: raise max number of slots in xennet_get_responses()")
Cc: stable@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Tue, 11 Sep 2018 06:33:58 +0000 (14:33 +0800)]
ipv6: use rt6_info members when dst is set in rt6_fill_node
In inet6_rtm_getroute, since Commit
93531c674315 ("net/ipv6: separate
handling of FIB entries from dst based routes"), it has used rt->from
to dump route info instead of rt.
However for some route like cache, some of its information like flags
or gateway is not the same as that of the 'from' one. It caused 'ip
route get' to dump the wrong route information.
In Jianlin's testing, the output information even lost the expiration
time for a pmtu route cache due to the wrong fib6_flags.
So change to use rt6_info members for dst addr, src addr, flags and
gateway when it tries to dump a route entry without fibmatch set.
v1->v2:
- not use rt6i_prefsrc.
- also fix the gw dump issue.
Fixes: 93531c674315 ("net/ipv6: separate handling of FIB entries from dst based routes")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 13 Sep 2018 03:36:47 +0000 (17:36 -1000)]
Merge tag 'drm-fixes-2018-09-12' of git://anongit.freedesktop.org/drm/drm
Pull drm nouveau fixes from Dave Airlie:
"I'm sending this separately as it's a bit larger than I generally like
for one driver, but it does contain a bunch of make my nvidia laptop
not die (runpm) and a bunch to make my docking station and monitor
display stuff (mst) fixes.
Lyude has spent a lot of time on these, and we are putting the fixes
into distro kernels as well asap, as it helps a bunch of standard
Lenovo laptops, so I'm fairly happy things are better than they were
before these patches, but I decided to split them out just for
clarification"
* tag 'drm-fixes-2018-09-12' of git://anongit.freedesktop.org/drm/drm:
drm/nouveau/disp/gm200-: enforce identity-mapped SOR assignment for LVDS/eDP panels
drm/nouveau/disp: fix DP disable race
drm/nouveau/disp: move eDP panel power handling
drm/nouveau/disp: remove unused struct member
drm/nouveau/TBDdevinit: don't fail when PMU/PRE_OS is missing from VBIOS
drm/nouveau/mmu: don't attempt to dereference vmm without valid instance pointer
drm/nouveau: fix oops in client init failure path
drm/nouveau: Fix nouveau_connector_ddc_detect()
drm/nouveau/drm/nouveau: Don't forget to cancel hpd_work on suspend/unload
drm/nouveau/drm/nouveau: Prevent handling ACPI HPD events too early
drm/nouveau: Reset MST branching unit before enabling
drm/nouveau: Only write DP_MSTM_CTRL when needed
drm/nouveau: Remove useless poll_enable() call in drm_load()
drm/nouveau: Remove useless poll_disable() call in switcheroo_set_state()
drm/nouveau: Remove useless poll_enable() call in switcheroo_set_state()
drm/nouveau: Fix deadlocks in nouveau_connector_detect()
drm/nouveau/drm/nouveau: Use pm_runtime_get_noresume() in connector_detect()
drm/nouveau/drm/nouveau: Fix deadlock with fb_helper with async RPM requests
drm/nouveau: Remove duplicate poll_enable() in pmops_runtime_suspend()
drm/nouveau/drm/nouveau: Fix bogus drm_kms_helper_poll_enable() placement
Linus Torvalds [Thu, 13 Sep 2018 03:32:50 +0000 (17:32 -1000)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix up several Kconfig dependencies in netfilter, from Martin Willi
and Florian Westphal.
2) Memory leak in be2net driver, from Petr Oros.
3) Memory leak in E-Switch handling of mlx5 driver, from Raed Salem.
4) mlx5_attach_interface needs to check for errors, from Huy Nguyen.
5) tipc_release() needs to orphan the sock, from Cong Wang.
6) Need to program TxConfig register after TX/RX is enabled in r8169
driver, not beforehand, from Maciej S. Szmigiero.
7) Handle 64K PAGE_SIZE properly in ena driver, from Netanel Belgazal.
8) Fix crash regression in ip_do_fragment(), from Taehee Yoo.
9) syzbot can create conditions where kernel log is flooded with
synflood warnings due to creation of many listening sockets, fix
that. From Willem de Bruijn.
10) Fix RCU issues in rds socket layer, from Cong Wang.
11) Fix vlan matching in nfp driver, from Pieter Jansen van Vuuren.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits)
nfp: flower: reject tunnel encap with ipv6 outer headers for offloading
nfp: flower: fix vlan match by checking both vlan id and vlan pcp
tipc: check return value of __tipc_dump_start()
s390/qeth: don't dump past end of unknown HW header
s390/qeth: use vzalloc for QUERY OAT buffer
s390/qeth: switch on SG by default for IQD devices
s390/qeth: indicate error when netdev allocation fails
rds: fix two RCU related problems
r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
erspan: fix error handling for erspan tunnel
erspan: return PACKET_REJECT when the appropriate tunnel is not found
tcp: rate limit synflood warnings further
MIPS: lantiq: dma: add dev pointer
netfilter: xt_hashlimit: use s->file instead of s->private
netfilter: nfnetlink_queue: Solve the NFQUEUE/conntrack clash for NF_REPEAT
netfilter: cttimeout: ctnl_timeout_find_get() returns incorrect pointer to type
netfilter: conntrack: timeout interface depend on CONFIG_NF_CONNTRACK_TIMEOUT
netfilter: conntrack: reset tcp maxwin on re-register
qmi_wwan: Support dynamic config on Quectel EP06
ethernet: renesas: convert to SPDX identifiers
...
David S. Miller [Wed, 12 Sep 2018 20:18:30 +0000 (13:18 -0700)]
Merge branch 'nfp-flower-fixes'
Jakub Kicinski says:
====================
nfp: flower: fixes for flower offload
Two fixes for flower matching and tunnel encap. Pieter fixes
VLAN matching if the entire VLAN id is masked out and match
is only performed on the PCP field. Louis adds validation of
tunnel flags for encap, most importantly we should not offload
actions on IPv6 tunnels if it's not supported.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Louis Peens [Tue, 11 Sep 2018 13:38:45 +0000 (06:38 -0700)]
nfp: flower: reject tunnel encap with ipv6 outer headers for offloading
This fixes a bug where ipv6 tunnels would report that it is
getting offloaded to hardware but would actually be rejected
by hardware.
Fixes: b27d6a95a70d ("nfp: compile flower vxlan tunnel set actions")
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pieter Jansen van Vuuren [Tue, 11 Sep 2018 13:38:44 +0000 (06:38 -0700)]
nfp: flower: fix vlan match by checking both vlan id and vlan pcp
Previously we only checked if the vlan id field is present when trying
to match a vlan tag. The vlan id and vlan pcp field should be treated
independently.
Fixes: 5571e8c9f241 ("nfp: extend flower matching capabilities")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Tue, 11 Sep 2018 22:12:17 +0000 (15:12 -0700)]
tipc: check return value of __tipc_dump_start()
When __tipc_dump_start() fails with running out of memory,
we have no reason to continue, especially we should avoid
calling tipc_dump_done().
Fixes: 8f5c5fcf3533 ("tipc: call start and done ops directly in __tipc_nl_compat_dumpit()")
Reported-and-tested-by: syzbot+3f8324abccfbf8c74a9f@syzkaller.appspotmail.com
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 12 Sep 2018 20:12:52 +0000 (13:12 -0700)]
Merge branch 'qeth-fixes'
Julian Wiedmann says:
====================
s390/qeth: fixes 2018-09-12
please apply the following qeth fixes for -net.
Patch 1 resolves a regression in an error path, while patch 2 enables
the SG support by default that was newly introduced with 4.19.
Patch 3 takes care of a longstanding problem with large-order
allocations, and patch 4 fixes a potential out-of-bounds access.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Wed, 12 Sep 2018 13:31:35 +0000 (15:31 +0200)]
s390/qeth: don't dump past end of unknown HW header
For inbound data with an unsupported HW header format, only dump the
actual HW header. We have no idea how much payload follows it, and what
it contains. Worst case, we dump past the end of the Inbound Buffer and
access whatever is located next in memory.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wenjia Zhang [Wed, 12 Sep 2018 13:31:34 +0000 (15:31 +0200)]
s390/qeth: use vzalloc for QUERY OAT buffer
qeth_query_oat_command() currently allocates the kernel buffer for
the SIOC_QETH_QUERY_OAT ioctl with kzalloc. So on systems with
fragmented memory, large allocations may fail (eg. the qethqoat tool by
default uses 132KB).
Solve this issue by using vzalloc, backing the allocation with
non-contiguous memory.
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Wed, 12 Sep 2018 13:31:33 +0000 (15:31 +0200)]
s390/qeth: switch on SG by default for IQD devices
Scatter-gather transmit brings a nice performance boost. Considering the
rather large MTU sizes at play, it's also totally the Right Thing To Do.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Wiedmann [Wed, 12 Sep 2018 13:31:32 +0000 (15:31 +0200)]
s390/qeth: indicate error when netdev allocation fails
Bailing out on allocation error is nice, but we also need to tell the
ccwgroup core that creating the qeth groupdev failed.
Fixes: d3d1b205e89f ("s390/qeth: allocate netdevice early")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 12 Sep 2018 16:51:27 +0000 (06:51 -1000)]
Merge tag 'riscv-for-linus-4.19-rc3' of git://git./linux/kernel/git/palmer/riscv-linux
Pull RISC-V fix from Palmer Dabbelt:
"This contains what I hope to be the last RISC-V patch for 4.19.
It fixes a bug in our initramfs support by removing some broken and
obselete code"
* tag 'riscv-for-linus-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
riscv: Do not overwrite initrd_start and initrd_end
Linus Torvalds [Wed, 12 Sep 2018 16:44:03 +0000 (06:44 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three fixes, all in drivers (qedi and iscsi target) so no wider impact
even if the code changes are a bit extensive"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Add the CRC size within iSCSI NVM image
scsi: iscsi: target: Fix conn_ops double free
scsi: iscsi: target: Set conn->sess to NULL when iscsi_login_set_conn_values fails
Cong Wang [Tue, 11 Sep 2018 01:27:26 +0000 (18:27 -0700)]
rds: fix two RCU related problems
When a rds sock is bound, it is inserted into the bind_hash_table
which is protected by RCU. But when releasing rds sock, after it
is removed from this hash table, it is freed immediately without
respecting RCU grace period. This could cause some use-after-free
as reported by syzbot.
Mark the rds sock with SOCK_RCU_FREE before inserting it into the
bind_hash_table, so that it would be always freed after a RCU grace
period.
The other problem is in rds_find_bound(), the rds sock could be
freed in between rhashtable_lookup_fast() and rds_sock_addref(),
so we need to extend RCU read lock protection in rds_find_bound()
to close this race condition.
Reported-and-tested-by: syzbot+8967084bcac563795dc6@syzkaller.appspotmail.com
Reported-by: syzbot+93a5839deb355537440f@syzkaller.appspotmail.com
Cc: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Cc: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: rds-devel@oss.oracle.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oarcle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kai-Heng Feng [Mon, 10 Sep 2018 17:51:43 +0000 (01:51 +0800)]
r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
After system suspend, sometimes the r8169 doesn't work when ethernet
cable gets pluggued.
This issue happens because rtl_reset_work() doesn't get called from
rtl8169_runtime_resume(), after system suspend.
In rtl_task(), RTL_FLAG_TASK_* only gets cleared if this condition is
met:
if (!netif_running(dev) ||
!test_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags))
...
If RTL_FLAG_TASK_ENABLED was cleared during system suspend while
RTL_FLAG_TASK_RESET_PENDING was set, the next rtl_schedule_task() won't
schedule task as the flag is still there.
So in addition to clearing RTL_FLAG_TASK_ENABLED, also clears other
flags.
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Haishuang Yan [Mon, 10 Sep 2018 14:19:48 +0000 (22:19 +0800)]
erspan: fix error handling for erspan tunnel
When processing icmp unreachable message for erspan tunnel, tunnel id
should be erspan_net_id instead of ipgre_net_id.
Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Haishuang Yan [Mon, 10 Sep 2018 14:19:47 +0000 (22:19 +0800)]
erspan: return PACKET_REJECT when the appropriate tunnel is not found
If erspan tunnel hasn't been established, we'd better send icmp port
unreachable message after receive erspan packets.
Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Sun, 9 Sep 2018 23:12:12 +0000 (19:12 -0400)]
tcp: rate limit synflood warnings further
Convert pr_info to net_info_ratelimited to limit the total number of
synflood warnings.
Commit
946cedccbd73 ("tcp: Change possible SYN flooding messages")
rate limits synflood warnings to one per listener.
Workloads that open many listener sockets can still see a high rate of
log messages. Syzkaller is one frequent example.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hauke Mehrtens [Sun, 9 Sep 2018 19:26:23 +0000 (21:26 +0200)]
MIPS: lantiq: dma: add dev pointer
dma_zalloc_coherent() now crashes if no dev pointer is given.
Add a dev pointer to the ltq_dma_channel structure and fill it in the
driver using it.
This fixes a bug introduced in kernel 4.19.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 12 Sep 2018 04:17:30 +0000 (21:17 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for you net tree:
1) Remove duplicated include at the end of UDP conntrack, from Yue Haibing.
2) Restore conntrack dependency on xt_cluster, from Martin Willi.
3) Fix splat with GSO skbs from the checksum target, from Florian Westphal.
4) Rework ct timeout support, the template strategy to attach custom timeouts
is not correct since it will not work in conjunction with conntrack zones
and we have a possible free after use when removing the rule due to missing
refcounting. To fix these problems, do not use conntrack template at all
and set custom timeout on the already valid conntrack object. This
fix comes with a preparation patch to simplify timeout adjustment by
initializating the first position of the timeout array for all of the
existing trackers. Patchset from Florian Westphal.
5) Fix missing dependency on from IPv4 chain NAT type, from Florian.
6) Release chain reference counter from the flush path, from Taehee Yoo.
7) After flushing an iptables ruleset, conntrack hooks are unregistered
and entries are left stale to be cleaned up by the timeout garbage
collector. No TCP tracking is done on established flows by this time.
If ruleset is reloaded, then hooks are registered again and TCP
tracking is restored, which considers packets to be invalid. Clear
window tracking to exercise TCP flow pickup from the middle given that
history is lost for us. Again from Florian.
8) Fix crash from netlink interface with CONFIG_NF_CONNTRACK_TIMEOUT=y
and CONFIG_NF_CT_NETLINK_TIMEOUT=n.
9) Broken CT target due to returning incorrect type from
ctnl_timeout_find_get().
10) Solve conntrack clash on NF_REPEAT verdicts too, from Michal Vaner.
11) Missing conversion of hashlimit sysctl interface to new API, from
Cong Wang.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 12 Sep 2018 02:23:21 +0000 (16:23 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- functional regression fix for sensor-hub driver from Hans de Goede
- stop doing device reset for i2c-hid devices, which unbreaks some of
them (and is in line with the specification), from Kai-Heng Feng
- error handling fix for hid-core from Gustavo A. R. Silva
- functional regression fix for some Elan panels from Benjamin
Tissoires
- a few new device ID additions and misc small fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: i2c-hid: Don't reset device upon system resume
HID: sensor-hub: Restore fixup for Lenovo ThinkPad Helix 2 sensor hub report
HID: core: fix NULL pointer dereference
HID: core: fix grouping by application
HID: multitouch: fix Elan panels with 2 input modes declaration
HID: hid-saitek: Add device ID for RAT 7 Contagion
HID: core: fix memory leak on probe
HID: input: fix leaking custom input node name
HID: add support for Apple Magic Keyboards
HID: i2c-hid: Fix flooded incomplete report after S3 on Rayd touchscreen
HID: intel-ish-hid: Enable Sunrise Point-H ish driver
Linus Torvalds [Tue, 11 Sep 2018 18:46:11 +0000 (08:46 -1000)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"This fixes one major regression with NFS and mlx4 due to the max_sg
rework in this merge window, tidies a few minor error_path
regressions, and various small fixes.
The HFI1 driver is broken this cycle due to a regression caused by a
PCI change, it is looking like Bjorn will merge a fix for this. Also,
the lingering ipoib issue I mentioned earlier still remains unfixed.
Summary:
- Fix possible FD type confusion crash
- Fix a user trigger-able crash in cxgb4
- Fix bad handling of IOMMU resources causing user controlled leaking
in bnxt
- Add missing locking in ipoib to fix a rare 'stuck tx' situation
- Add missing locking in cma
- Add two missing missing uverbs cleanups on failure paths,
regressions from this merge window
- Fix a regression from this merge window that caused RDMA NFS to not
work with the mlx4 driver due to the max_sg changes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/mlx4: Ensure that maximal send/receive SGE less than supported by HW
RDMA/cma: Protect cma dev list with lock
RDMA/uverbs: Fix error cleanup path of ib_uverbs_add_one()
bnxt_re: Fix couple of memory leaks that could lead to IOMMU call traces
IB/ipoib: Avoid a race condition between start_xmit and cm_rep_handler
iw_cxgb4: only allow 1 flush on user qps
IB/core: Release object lock if destroy failed
RDMA/ucma: check fd type in ucma_migrate_id()
Dave Airlie [Tue, 11 Sep 2018 06:54:40 +0000 (16:54 +1000)]
Merge branch 'linux-4.19' of git://github.com/skeggsb/linux into drm-fixes
A bunch of fixes for MST/runpm problems and races, as well as fixes
for issues that prevent more recent laptops from booting.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CABDvA==GF63dy8a9j611=-0x8G6FRu7uC-ZQypsLO_hqV4OAcA@mail.gmail.com
Cong Wang [Wed, 5 Sep 2018 18:41:31 +0000 (11:41 -0700)]
netfilter: xt_hashlimit: use s->file instead of s->private
After switching to the new procfs API, it is supposed to
retrieve the private pointer from PDE_DATA(file_inode(s->file)),
s->private is no longer referred.
Fixes: 1cd671827290 ("netfilter/x_tables: switch to proc_create_seq_private")
Reported-by: Sami Farin <hvtaifwkbgefbaei@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Tested-by: Sami Farin <hvtaifwkbgefbaei@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Michal 'vorner' Vaner [Tue, 4 Sep 2018 11:25:44 +0000 (13:25 +0200)]
netfilter: nfnetlink_queue: Solve the NFQUEUE/conntrack clash for NF_REPEAT
NF_REPEAT places the packet at the beginning of the iptables chain
instead of accepting or rejecting it right away. The packet however will
reach the end of the chain and continue to the end of iptables
eventually, so it needs the same handling as NF_ACCEPT and NF_DROP.
Fixes: 368982cd7d1b ("netfilter: nfnetlink_queue: resolve clash for unconfirmed conntracks")
Signed-off-by: Michal 'vorner' Vaner <michal.vaner@avast.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Mon, 3 Sep 2018 11:53:22 +0000 (13:53 +0200)]
netfilter: cttimeout: ctnl_timeout_find_get() returns incorrect pointer to type
Compiler did not catch incorrect typing in the rcu hook assignment.
% nfct add timeout test-tcp inet tcp established 100 close 10 close_wait 10
% iptables -I OUTPUT -t raw -p tcp -j CT --timeout test-tcp
dmesg - xt_CT: Timeout policy `test-tcp' can only be used by L3 protocol number 25000
The CT target bails out with incorrect layer 3 protocol number.
Fixes: 6c1fd7dc489d ("netfilter: cttimeout: decouple timeout policy from nfnetlink_cttimeout object")
Reported-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pablo Neira Ayuso [Fri, 31 Aug 2018 10:36:01 +0000 (12:36 +0200)]
netfilter: conntrack: timeout interface depend on CONFIG_NF_CONNTRACK_TIMEOUT
Now that cttimeout support for nft_ct is in place, these should depend
on CONFIG_NF_CONNTRACK_TIMEOUT otherwise we can crash when dumping the
policy if this option is not enabled.
[ 71.600121] BUG: unable to handle kernel NULL pointer dereference at
0000000000000000
[...]
[ 71.600141] CPU: 3 PID: 7612 Comm: nft Not tainted 4.18.0+ #246
[...]
[ 71.600188] Call Trace:
[ 71.600201] ? nft_ct_timeout_obj_dump+0xc6/0xf0 [nft_ct]
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Florian Westphal [Fri, 24 Aug 2018 21:22:08 +0000 (23:22 +0200)]
netfilter: conntrack: reset tcp maxwin on re-register
Doug Smythies says:
Sometimes it is desirable to temporarily disable, or clear,
the iptables rule set on a computer being controlled via a
secure shell session (SSH). While unwise on an internet facing
computer, I also do it often on non-internet accessible computers
while testing. Recently, this has become problematic, with the
SSH session being dropped upon re-load of the rule set.
The problem is that when all rules are deleted, conntrack hooks get
unregistered.
In case the rules are re-added later, its possible that tcp window
has moved far enough so that all packets are considered invalid (out of
window) until entry expires (which can take forever, default
established timeout is 5 days).
Fix this by clearing maxwin of existing tcp connections on register.
v2: don't touch entries on hook removal.
v3: remove obsolete expiry check.
Reported-by: Doug Smythies <dsmythies@telus.net>
Fixes: 4d3a57f23dec59 ("netfilter: conntrack: do not enable connection tracking unless needed")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Kristian Evensen [Sat, 8 Sep 2018 11:50:48 +0000 (13:50 +0200)]
qmi_wwan: Support dynamic config on Quectel EP06
Quectel EP06 (and EM06/EG06) supports dynamic configuration of USB
interfaces, without the device changing VID/PID or configuration number.
When the configuration is updated and interfaces are added/removed, the
interface numbers change. This means that the current code for matching
EP06 does not work.
This patch removes the current EP06 interface number match, and replaces
it with a match on class, subclass and protocol. Unfortunately, matching
on those three alone is not enough, as the diag interface exports the
same values as QMI. The other serial interfaces + adb export different
values and do not match.
The diag interface only has two endpoints, while the QMI interface has
three. I have therefore added a check for number of interfaces, and we
ignore the interface if the number of endpoints equals two.
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kuninori Morimoto [Fri, 7 Sep 2018 02:02:45 +0000 (02:02 +0000)]
ethernet: renesas: convert to SPDX identifiers
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 10 Sep 2018 00:26:43 +0000 (17:26 -0700)]
Linux 4.19-rc3
Taehee Yoo [Sun, 9 Sep 2018 17:47:05 +0000 (02:47 +0900)]
ip: frags: fix crash in ip_do_fragment()
A kernel crash occurrs when defragmented packet is fragmented
in ip_do_fragment().
In defragment routine, skb_orphan() is called and
skb->ip_defrag_offset is set. but skb->sk and
skb->ip_defrag_offset are same union member. so that
frag->sk is not NULL.
Hence crash occurrs in skb->sk check routine in ip_do_fragment() when
defragmented packet is fragmented.
test commands:
%iptables -t nat -I POSTROUTING -j MASQUERADE
%hping3 192.168.4.2 -s 1000 -p 2000 -d 60000
splat looks like:
[ 261.069429] kernel BUG at net/ipv4/ip_output.c:636!
[ 261.075753] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
[ 261.083854] CPU: 1 PID: 1349 Comm: hping3 Not tainted 4.19.0-rc2+ #3
[ 261.100977] RIP: 0010:ip_do_fragment+0x1613/0x2600
[ 261.106945] Code: e8 e2 38 e3 fe 4c 8b 44 24 18 48 8b 74 24 08 e9 92 f6 ff ff 80 3c 02 00 0f 85 da 07 00 00 48 8b b5 d0 00 00 00 e9 25 f6 ff ff <0f> 0b 0f 0b 44 8b 54 24 58 4c 8b 4c 24 18 4c 8b 5c 24 60 4c 8b 6c
[ 261.127015] RSP: 0018:
ffff8801031cf2c0 EFLAGS:
00010202
[ 261.134156] RAX:
1ffff1002297537b RBX:
ffffed0020639e6e RCX:
0000000000000004
[ 261.142156] RDX:
0000000000000000 RSI:
0000000000000000 RDI:
ffff880114ba9bd8
[ 261.150157] RBP:
ffff880114ba8a40 R08:
ffffed0022975395 R09:
ffffed0022975395
[ 261.158157] R10:
0000000000000001 R11:
ffffed0022975394 R12:
ffff880114ba9ca4
[ 261.166159] R13:
0000000000000010 R14:
ffff880114ba9bc0 R15:
dffffc0000000000
[ 261.174169] FS:
00007fbae2199700(0000) GS:
ffff88011b400000(0000) knlGS:
0000000000000000
[ 261.183012] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 261.189013] CR2:
00005579244fe000 CR3:
0000000119bf4000 CR4:
00000000001006e0
[ 261.198158] Call Trace:
[ 261.199018] ? dst_output+0x180/0x180
[ 261.205011] ? save_trace+0x300/0x300
[ 261.209018] ? ip_copy_metadata+0xb00/0xb00
[ 261.213034] ? sched_clock_local+0xd4/0x140
[ 261.218158] ? kill_l4proto+0x120/0x120 [nf_conntrack]
[ 261.223014] ? rt_cpu_seq_stop+0x10/0x10
[ 261.227014] ? find_held_lock+0x39/0x1c0
[ 261.233008] ip_finish_output+0x51d/0xb50
[ 261.237006] ? ip_fragment.constprop.56+0x220/0x220
[ 261.243011] ? nf_ct_l4proto_register_one+0x5b0/0x5b0 [nf_conntrack]
[ 261.250152] ? rcu_is_watching+0x77/0x120
[ 261.255010] ? nf_nat_ipv4_out+0x1e/0x2b0 [nf_nat_ipv4]
[ 261.261033] ? nf_hook_slow+0xb1/0x160
[ 261.265007] ip_output+0x1c7/0x710
[ 261.269005] ? ip_mc_output+0x13f0/0x13f0
[ 261.273002] ? __local_bh_enable_ip+0xe9/0x1b0
[ 261.278152] ? ip_fragment.constprop.56+0x220/0x220
[ 261.282996] ? nf_hook_slow+0xb1/0x160
[ 261.287007] raw_sendmsg+0x21f9/0x4420
[ 261.291008] ? dst_output+0x180/0x180
[ 261.297003] ? sched_clock_cpu+0x126/0x170
[ 261.301003] ? find_held_lock+0x39/0x1c0
[ 261.306155] ? stop_critical_timings+0x420/0x420
[ 261.311004] ? check_flags.part.36+0x450/0x450
[ 261.315005] ? _raw_spin_unlock_irq+0x29/0x40
[ 261.320995] ? _raw_spin_unlock_irq+0x29/0x40
[ 261.326142] ? cyc2ns_read_end+0x10/0x10
[ 261.330139] ? raw_bind+0x280/0x280
[ 261.334138] ? sched_clock_cpu+0x126/0x170
[ 261.338995] ? check_flags.part.36+0x450/0x450
[ 261.342991] ? __lock_acquire+0x4500/0x4500
[ 261.348994] ? inet_sendmsg+0x11c/0x500
[ 261.352989] ? dst_output+0x180/0x180
[ 261.357012] inet_sendmsg+0x11c/0x500
[ ... ]
v2:
- clear skb->sk at reassembly routine.(Eric Dumarzet)
Fixes: fa0f527358bd ("ip: use rb trees for IP frag queue.")
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vakul Garg [Thu, 6 Sep 2018 16:11:40 +0000 (21:41 +0530)]
net/tls: Set count of SG entries if sk_alloc_sg returns -ENOSPC
tls_sw_sendmsg() allocates plaintext and encrypted SG entries using
function sk_alloc_sg(). In case the number of SG entries hit
MAX_SKB_FRAGS, sk_alloc_sg() returns -ENOSPC and sets the variable for
current SG index to '0'. This leads to calling of function
tls_push_record() with 'sg_encrypted_num_elem = 0' and later causes
kernel crash. To fix this, set the number of SG elements to the number
of elements in plaintext/encrypted SG arrays in case sk_alloc_sg()
returns -ENOSPC.
Fixes: 3c4d7559159b ("tls: kernel TLS support")
Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 9 Sep 2018 14:59:56 +0000 (07:59 -0700)]
Merge branch 'ena-fixes'
Netanel Belgazal says:
====================
bug fixes for ENA Ethernet driver
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:26 +0000 (08:15 +0000)]
net: ena: fix incorrect usage of memory barriers
Added memory barriers where they were missing to support multiple
architectures, and removed redundant ones.
As part of removing the redundant memory barriers and improving
performance, we moved to more relaxed versions of memory barriers,
as well as to the more relaxed version of writel - writel_relaxed,
while maintaining correctness.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:25 +0000 (08:15 +0000)]
net: ena: fix missing calls to READ_ONCE
Add READ_ONCE calls where necessary (for example when iterating
over a memory field that gets updated by the hardware).
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:24 +0000 (08:15 +0000)]
net: ena: fix missing lock during device destruction
acquire the rtnl_lock during device destruction to avoid
using partially destroyed device.
ena_remove() shares almost the same logic as ena_destroy_device(),
so use ena_destroy_device() and avoid duplications.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:23 +0000 (08:15 +0000)]
net: ena: fix potential double ena_destroy_device()
ena_destroy_device() can potentially be called twice.
To avoid this, check that the device is running and
only then proceed destroying it.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:22 +0000 (08:15 +0000)]
net: ena: fix device destruction to gracefully free resources
When ena_destroy_device() is called from ena_suspend(), the device is
still reachable from the driver. Therefore, the driver can send a command
to the device to free all resources.
However, in all other cases of calling ena_destroy_device(), the device is
potentially in an error state and unreachable from the driver. In these
cases the driver must not send commands to the device.
The current implementation does not request resource freeing from the
device even when possible. We add the graceful parameter to
ena_destroy_device() to enable resource freeing when possible, and
use it in ena_suspend().
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:21 +0000 (08:15 +0000)]
net: ena: fix driver when PAGE_SIZE == 64kB
The buffer length field in the ena rx descriptor is 16 bit, and the
current driver passes a full page in each ena rx descriptor.
When PAGE_SIZE equals 64kB or more, the buffer length field becomes
zero.
To solve this issue, limit the ena Rx descriptor to use 16kB even
when allocating 64kB kernel pages. This change would not impact ena
device functionality, as 16kB is still larger than maximum MTU.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netanel Belgazal [Sun, 9 Sep 2018 08:15:20 +0000 (08:15 +0000)]
net: ena: fix surprise unplug NULL dereference kernel crash
Starting with driver version 1.5.0, in case of a surprise device
unplug, there is a race caused by invoking ena_destroy_device()
from two different places. As a result, the readless register might
be accessed after it was destroyed.
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 9 Sep 2018 14:05:15 +0000 (07:05 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for x86:
- Prevent multiplication result truncation on 32bit. Introduced with
the early timestamp reworrk.
- Ensure microcode revision storage to be consistent under all
circumstances
- Prevent write tearing of PTEs
- Prevent confusion of user and kernel reegisters when dumping fatal
signals verbosely
- Make an error return value in a failure path of the vector
allocation negative. Returning EINVAL might the caller assume
success and causes further wreckage.
- A trivial kernel doc warning fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Use WRITE_ONCE() when setting PTEs
x86/apic/vector: Make error return value negative
x86/process: Don't mix user/kernel regs in 64bit __show_regs()
x86/tsc: Prevent result truncation on 32bit
x86: Fix kernel-doc atomic.h warnings
x86/microcode: Update the new microcode revision unconditionally
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
Linus Torvalds [Sun, 9 Sep 2018 13:55:27 +0000 (06:55 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timekeeping fixes from Thomas Gleixner:
"Two fixes for timekeeping:
- Revert to the previous kthread based update, which is unfortunately
required due to lock ordering issues. The removal caused boot
failures on old Core2 machines. Add a proper comment why the thread
needs to stay to prevent accidental removal in the future.
- Fix a silly typo in a function declaration"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Revert "Remove kthread"
timekeeping: Fix declaration of read_persistent_wall_and_boot_offset()
Linus Torvalds [Sun, 9 Sep 2018 13:49:29 +0000 (06:49 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irqchip fix from Thomas Gleixner:
"A single fix to prevent allocating excessive memory in the GIC/ITS
driver.
While the subject of the patch might suggest otherwise this is a real
fix as some SoCs exceed the memory allocation limits and fail to boot"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint
Linus Torvalds [Sun, 9 Sep 2018 13:48:06 +0000 (06:48 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull cpu hotplug fixes from Thomas Gleixner:
"Two fixes for the hotplug state machine code:
- Move the misplaces smb() in the hotplug thread function to the
proper place, otherwise a half update control struct could be
observed
- Prevent state corruption on error rollback, which causes the state
to advance by one and as a consequence skip it in the bringup
sequence"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Prevent state corruption on error rollback
cpu/hotplug: Adjust misplaced smb() in cpuhp_thread_fun()
Linus Torvalds [Sun, 9 Sep 2018 12:54:05 +0000 (05:54 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/tytso/random
Pull random driver fix from Ted Ts'o:
"Fix things so the choice of whether or not to trust RDRAND to
initialize the CRNG is configurable via the boot option
random.trust_cpu={on,off}"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: make CPU trust a boot parameter
Linus Torvalds [Sun, 9 Sep 2018 12:42:11 +0000 (05:42 -0700)]
Merge tag 'kbuild-fixes-v4.19' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- make setlocalversion more robust about -dirty check
- loosen the pkg-config requirement for Kconfig
- change missing depmod to a warning from an error
- warn modules_install when System.map is missing
* tag 'kbuild-fixes-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: modules_install: warn when missing System.map file
kbuild: make missing $DEPMOD a Warning instead of an Error
kconfig: do not require pkg-config on make {menu,n}config
kconfig: remove a spurious self-assignment
scripts/setlocalversion: git: Make -dirty check more robust
Randy Dunlap [Thu, 6 Sep 2018 23:37:24 +0000 (16:37 -0700)]
kbuild: modules_install: warn when missing System.map file
If there is no System.map file for "make modules_install",
scripts/depmod.sh will silently exit with success, having done
nothing. Since this is an unexpected situation, change it to
report a Warning for the missing file. The behavior is not
changed except for the Warning message.
The (previous) silent success and new Warning can be reproduced
by:
$ make mrproper; make defconfig
$ make modules; make modules_install
and since System.map is produced by "make vmlinux", the steps
above omit producing the System.map file.
Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Linus Torvalds [Sat, 8 Sep 2018 22:52:45 +0000 (15:52 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"ARM:
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
s390:
- Fallout from the hugetlbfs support: pfmf interpretion and locking
- VSIE: fix keywrapping for nested guests
PPC:
- Fix a bug where pages might not get marked dirty, causing guest
memory corruption on migration
- Fix a bug causing reads from guest memory to use the wrong guest
real address for very large HPT guests (>256G of memory), leading
to failures in instruction emulation.
x86:
- Fix out of bound access from malicious pv ipi hypercalls
(introduced in rc1)
- Fix delivery of pending interrupts when entering a nested guest,
preventing arbitrarily late injection
- Sanitize kvm_stat output after destroying a guest
- Fix infinite loop when emulating a nested guest page fault and
improve the surrounding emulation code
- Two minor cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
KVM: LAPIC: Fix pv ipis out-of-bounds access
KVM: nVMX: Fix loss of pending IRQ/NMI before entering L2
arm64: KVM: Remove pgd_lock
KVM: Remove obsolete kvm_unmap_hva notifier backend
arm64: KVM: Only force FPEXC32_EL2.EN if trapping FPSIMD
KVM: arm/arm64: Clean dcache to PoC when changing PTE due to CoW
KVM: s390: Properly lock mm context allow_gmap_hpage_1m setting
KVM: s390: vsie: copy wrapping keys to right place
KVM: s390: Fix pfmf and conditional skey emulation
tools/kvm_stat: re-animate display of dead guests
tools/kvm_stat: indicate dead guests as such
tools/kvm_stat: handle guest removals more gracefully
tools/kvm_stat: don't reset stats when setting PID filter for debugfs
tools/kvm_stat: fix updates for dead guests
tools/kvm_stat: fix handling of invalid paths in debugfs provider
tools/kvm_stat: fix python3 issues
KVM: x86: Unexport x86_emulate_instruction()
KVM: x86: Rename emulate_instruction() to kvm_emulate_instruction()
KVM: x86: Do not re-{try,execute} after failed emulation in L2
KVM: x86: Default to not allowing emulation retry in kvm_mmu_page_fault
...
Linus Torvalds [Sat, 8 Sep 2018 22:38:57 +0000 (15:38 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A few more fixes who have trickled in:
- MMC bus width fixup for some Allwinner platforms
- Fix for NULL deref in ti-aemif when no platform data is passed in
- Fix div by 0 in SCMI code
- Add a missing module alias in a new RPi driver"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
memory: ti-aemif: fix a potential NULL-pointer dereference
firmware: arm_scmi: fix divide by zero when sustained_perf_level is zero
hwmon: rpi: add module alias to raspberrypi-hwmon
arm64: allwinner: dts: h6: fix Pine H64 MMC bus width
Olof Johansson [Sat, 8 Sep 2018 17:04:37 +0000 (10:04 -0700)]
Merge tag 'sunxi-fixes-for-4.19' of https://git./linux/kernel/git/sunxi/linux into fixes
Allwinner fixes for 4.19
Just one fix for H6 mmc on the Pine H64: the mmc bus width was missing
from the device tree. This was added in 4.19-rc1.
* tag 'sunxi-fixes-for-4.19' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
arm64: allwinner: dts: h6: fix Pine H64 MMC bus width
Signed-off-by: Olof Johansson <olof@lixom.net>
Nadav Amit [Sun, 2 Sep 2018 18:14:50 +0000 (11:14 -0700)]
x86/mm: Use WRITE_ONCE() when setting PTEs
When page-table entries are set, the compiler might optimize their
assignment by using multiple instructions to set the PTE. This might
turn into a security hazard if the user somehow manages to use the
interim PTE. L1TF does not make our lives easier, making even an interim
non-present PTE a security hazard.
Using WRITE_ONCE() to set PTEs and friends should prevent this potential
security hazard.
I skimmed the differences in the binary with and without this patch. The
differences are (obviously) greater when CONFIG_PARAVIRT=n as more
code optimizations are possible. For better and worse, the impact on the
binary with this patch is pretty small. Skimming the code did not cause
anything to jump out as a security hazard, but it seems that at least
move_soft_dirty_pte() caused set_pte_at() to use multiple writes.
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180902181451.80520-1-namit@vmware.com
Thomas Gleixner [Sat, 8 Sep 2018 10:07:26 +0000 (12:07 +0200)]
x86/apic/vector: Make error return value negative
activate_managed() returns EINVAL instead of -EINVAL in case of
error. While this is unlikely to happen, the positive return value would
cause further malfunction at the call site.
Fixes: 2db1f959d9dc ("x86/vector: Handle managed interrupts proper")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Vincent Whitchurch [Thu, 6 Sep 2018 13:54:59 +0000 (15:54 +0200)]
tcp: really ignore MSG_ZEROCOPY if no SO_ZEROCOPY
According to the documentation in msg_zerocopy.rst, the SO_ZEROCOPY
flag was introduced because send(2) ignores unknown message flags and
any legacy application which was accidentally passing the equivalent of
MSG_ZEROCOPY earlier should not see any new behaviour.
Before commit
f214f915e7db ("tcp: enable MSG_ZEROCOPY"), a send(2) call
which passed the equivalent of MSG_ZEROCOPY without setting SO_ZEROCOPY
would succeed. However, after that commit, it fails with -ENOBUFS. So
it appears that the SO_ZEROCOPY flag fails to fulfill its intended
purpose. Fix it.
Fixes: f214f915e7db ("tcp: enable MSG_ZEROCOPY")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 6 Sep 2018 21:50:16 +0000 (14:50 -0700)]
net_sched: properly cancel netlink dump on failure
When nla_put*() fails after nla_nest_start(), we need
to call nla_nest_cancel() to cancel the message, otherwise
we end up calling nla_nest_end() like a success.
Fixes: 0ed5269f9e41 ("net/sched: add tunnel option support to act_tunnel_key")
Cc: Davide Caratti <dcaratti@redhat.com>
Cc: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Juergen Gross [Fri, 7 Sep 2018 12:21:30 +0000 (14:21 +0200)]
xen/netfront: fix waiting for xenbus state change
Commit
822fb18a82aba ("xen-netfront: wait xenbus state change when load
module manually") added a new wait queue to wait on for a state change
when the module is loaded manually. Unfortunately there is no wakeup
anywhere to stop that waiting.
Instead of introducing a new wait queue rename the existing
module_unload_q to module_wq and use it for both purposes (loading and
unloading).
As any state change of the backend might be intended to stop waiting
do the wake_up_all() in any case when netback_changed() is called.
Fixes: 822fb18a82aba ("xen-netfront: wait xenbus state change when load module manually")
Cc: <stable@vger.kernel.org> #4.18
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 8 Sep 2018 00:30:40 +0000 (17:30 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- bugfixes for uniphier, i801, and xiic drivers
- ID removal (never produced) for imx
- one MAINTAINER addition
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: xiic: Record xilinx i2c with Zynq fragment
i2c: xiic: Make the start and the byte count write atomic
i2c: i801: fix DNV's SMBCTRL register offset
i2c: imx-lpi2c: Remove mx8dv compatible entry
dt-bindings: imx-lpi2c: Remove mx8dv compatible entry
i2c: uniphier-f: issue STOP only for last message or I2C_M_STOP
i2c: uniphier: issue STOP only for last message or I2C_M_STOP
Linus Torvalds [Fri, 7 Sep 2018 23:45:32 +0000 (16:45 -0700)]
Merge tag 'arc-4.19-rc3' of git://git./linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
- Fix for atomic_fetch_#op [Will Deacon]
- Enable per device IOC [Eugeniy Paltsev]
- Remove redundant gcc version checks [Masahiro Yamada]
- Miscll platform config/DT updates [Alexey Brodkin]
* tag 'arc-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: don't check for HIGHMEM pages in arch_dma_alloc
ARC: IOC: panic if both IOC and ZONE_HIGHMEM enabled
ARC: dma [IOC] Enable per device io coherency
ARC: dma [IOC]: mark DMA devices connected as dma-coherent
ARC: atomics: unbork atomic_fetch_##op()
arc: remove redundant GCC version checks
ARC: sort Kconfig
ARC: cleanup show_faulting_vma()
ARC: [plat-axs*]: Enable SWAP
ARC: [plat-axs*/plat-hsdk]: Allow U-Boot to pass MAC-address to the kernel
ARC: configs: cleanup
David Howells [Fri, 7 Sep 2018 22:55:17 +0000 (23:55 +0100)]
afs: Fix cell specification to permit an empty address list
Fix the cell specification mechanism to allow cells to be pre-created
without having to specify at least one address (the addresses will be
upcalled for).
This allows the cell information preload service to avoid the need to issue
loads of DNS lookups during boot to get the addresses for each cell (500+
lookups for the 'standard' cell list[*]). The lookups can be done later as
each cell is accessed through the filesystem.
Also remove the print statement that prints a line every time a new cell is
added.
[*] There are 144 cells in the list. Each cell is first looked up for an
SRV record, and if that fails, for an AFSDB record. These get a list
of server names, each of which then has to be looked up to get the
addresses for that server. E.g.:
dig srv _afs3-vlserver._udp.grand.central.org
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Maciej S. Szmigiero [Fri, 7 Sep 2018 18:15:22 +0000 (20:15 +0200)]
r8169: set TxConfig register after TX / RX is enabled, just like RxConfig
Commit
3559d81e76bf ("r8169: simplify rtl_hw_start_8169") changed order of
two register writes:
1) Caused RxConfig to be written before TX / RX is enabled,
2) Caused TxConfig to be written before TX / RX is enabled.
At least on XIDs
10000000 ("RTL8169sb/8110sb") and
18000000 ("RTL8169sc/8110sc") such writes are ignored by the chip, leaving
values in these registers intact.
Change 1) was reverted by
commit
05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices"),
however change 2) wasn't.
In practice, this caused TxConfig's "InterFrameGap time" and "Max DMA Burst
Size per Tx DMA Burst" bits to be zero dramatically reducing TX performance
(in my tests it dropped from around 500Mbps to around 50Mbps).
This patch fixes the issue by moving TxConfig register write a bit later in
the code so it happens after TX / RX is already enabled.
Fixes: 05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices")
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 7 Sep 2018 19:15:37 +0000 (12:15 -0700)]
Merge tag 'md/4.19-rc2' of git://git./linux/kernel/git/shli/md
Pull MD fixes from Shaohua Li:
- Fix a locking issue for md-cluster (Guoqing)
- Fix a sync crash for raid10 (Ni)
- Fix a reshape bug with raid5 cache enabled (me)
* tag 'md/4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md-cluster: release RESYNC lock after the last resync message
RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0
md/raid5-cache: disable reshape completely
Linus Torvalds [Fri, 7 Sep 2018 17:57:59 +0000 (10:57 -0700)]
Merge tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two rbd patches to complete support for images within namespaces that
went into -rc1 and a use-after-free fix.
The rbd changes have been sitting in a branch for quite a while but
couldn't be included into the -rc1 pull request because of a pending
wire protocol backwards compatibility fixup that only got committed
early this week"
* tag 'ceph-for-4.19-rc3' of https://github.com/ceph/ceph-client:
rbd: support cloning across namespaces
rbd: factor out get_parent_info()
ceph: avoid a use-after-free in ceph_destroy_options()
Linus Torvalds [Fri, 7 Sep 2018 17:54:46 +0000 (10:54 -0700)]
Merge tag 'for_v4.19-rc3' of git://git./linux/kernel/git/jack/linux-fs
Pull fsnotify fix from Jan Kara:
"A small fsnotify fix from Amir"
* tag 'for_v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: fix ignore mask logic in fsnotify()
Linus Torvalds [Fri, 7 Sep 2018 17:37:23 +0000 (10:37 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
"Just one small fix here, preventing a VM_WARN_ON when a !present
PMD/PUD is "freed" as part of a huge ioremap() operation.
The correct behaviour is to skip the free silently in this case, which
is a little weird (the function is a bit of a misnomer), but it
follows the x86 implementation"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fix erroneous warnings in page freeing functions
Linus Torvalds [Fri, 7 Sep 2018 17:25:26 +0000 (10:25 -0700)]
Merge tag 'acpi-4.19-rc3' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a regression from the 4.18 cycle in the ACPI driver for
Intel SoCs (LPSS) and prevent dmi_check_system() from being called on
non-x86 systems in the ACPI core.
Specifics:
- Fix a power management regression in the ACPI driver for Intel SoCs
(LPSS) introduced by a system-wide suspend/resume fix during the
4.18 cycle (Zhang Rui).
- Prevent dmi_check_system() from being called on non-x86 systems in
the ACPI core (Jean Delvare)"
* tag 'acpi-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / LPSS: Force LPSS quirks on boot
ACPI / bus: Only call dmi_check_system() on X86
Linus Torvalds [Fri, 7 Sep 2018 17:20:31 +0000 (10:20 -0700)]
Merge tag 'sound-4.19-rc3' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a few small fixes:
- a fix for the recursive work cancellation in a specific HD-audio
operation mode
- a fix for potentially uninitialized memory access via rawmidi
- the register bit access fixes for ASoC HD-audio"
* tag 'sound-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda: Fix several mismatch for register mask and value
ALSA: rawmidi: Initialize allocated buffers
ALSA: hda - Fix cancel_work_sync() stall from jackpoll work
Wanpeng Li [Thu, 30 Aug 2018 02:03:30 +0000 (10:03 +0800)]
KVM: LAPIC: Fix pv ipis out-of-bounds access
Dan Carpenter reported that the untrusted data returns from kvm_register_read()
results in the following static checker warning:
arch/x86/kvm/lapic.c:576 kvm_pv_send_ipi()
error: buffer underflow 'map->phys_map' 's32min-s32max'
KVM guest can easily trigger this by executing the following assembly sequence
in Ring0:
mov $10, %rax
mov $0xFFFFFFFF, %rbx
mov $0xFFFFFFFF, %rdx
mov $0, %rsi
vmcall
As this will cause KVM to execute the following code-path:
vmx_handle_exit() -> handle_vmcall() -> kvm_emulate_hypercall() -> kvm_pv_send_ipi()
which will reach out-of-bounds access.
This patch fixes it by adding a check to kvm_pv_send_ipi() against map->max_apic_id,
ignoring destinations that are not present and delivering the rest. We also check
whether or not map->phys_map[min + i] is NULL since the max_apic_id is set to the
max apic id, some phys_map maybe NULL when apic id is sparse, especially kvm
unconditionally set max_apic_id to 255 to reserve enough space for any xAPIC ID.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Liran Alon <liran.alon@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
[Add second "if (min > map->max_apic_id)" to complete the fix. -Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Liran Alon [Mon, 3 Sep 2018 12:20:22 +0000 (15:20 +0300)]
KVM: nVMX: Fix loss of pending IRQ/NMI before entering L2
Consider the case L1 had a IRQ/NMI event until it executed
VMLAUNCH/VMRESUME which wasn't delivered because it was disallowed
(e.g. interrupts disabled). When L1 executes VMLAUNCH/VMRESUME,
L0 needs to evaluate if this pending event should cause an exit from
L2 to L1 or delivered directly to L2 (e.g. In case L1 don't intercept
EXTERNAL_INTERRUPT).
Usually this would be handled by L0 requesting a IRQ/NMI window
by setting VMCS accordingly. However, this setting was done on
VMCS01 and now VMCS02 is active instead. Thus, when L1 executes
VMLAUNCH/VMRESUME we force L0 to perform pending event evaluation by
requesting a KVM_REQ_EVENT.
Note that above scenario exists when L1 KVM is about to enter L2 but
requests an "immediate-exit". As in this case, L1 will
disable-interrupts and then send a self-IPI before entering L2.
Reviewed-by: Nikita Leshchenko <nikita.leshchenko@oracle.com>
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Radim Krčmář [Fri, 7 Sep 2018 16:38:25 +0000 (18:38 +0200)]
Merge tag 'kvm-arm-fixes-for-v4.19-v2' of git://git./linux/kernel/git/kvmarm/kvmarm
Fixes for KVM/ARM for Linux v4.19 v2:
- Fix a VFP corruption in 32-bit guest
- Add missing cache invalidation for CoW pages
- Two small cleanups
Radim Krčmář [Fri, 7 Sep 2018 16:30:47 +0000 (18:30 +0200)]
Merge tag 'kvm-s390-master-4.19-1' of git://git./linux/kernel/git/kvms390/linux
KVM: s390: Fixes for 4.19
- Fallout from the hugetlbfs support: pfmf interpretion and locking
- VSIE: fix keywrapping for nested guests
Steven Price [Mon, 13 Aug 2018 16:04:53 +0000 (17:04 +0100)]
arm64: KVM: Remove pgd_lock
The lock has never been used and the page tables are protected by
mmu_lock in struct kvm.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Marc Zyngier [Thu, 23 Aug 2018 09:18:14 +0000 (10:18 +0100)]
KVM: Remove obsolete kvm_unmap_hva notifier backend
kvm_unmap_hva is long gone, and we only have kvm_unmap_hva_range to
deal with. Drop the now obsolete code.
Fixes: fb1522e099f0 ("KVM: update to new mmu_notifier semantic v2")
Cc: James Hogan <jhogan@kernel.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Marc Zyngier [Thu, 23 Aug 2018 10:51:43 +0000 (11:51 +0100)]
arm64: KVM: Only force FPEXC32_EL2.EN if trapping FPSIMD
If trapping FPSIMD in the context of an AArch32 guest, it is critical
to set FPEXC32_EL2.EN to 1 so that the trapping is taken to EL2 and
not EL1.
Conversely, it is just as critical *not* to set FPEXC32_EL2.EN to 1
if we're not going to trap FPSIMD, as we then corrupt the existing
VFP state.
Moving the call to __activate_traps_fpsimd32 to the point where we
know for sure that we are going to trap ensures that we don't set that
bit spuriously.
Fixes: e6b673b741ea ("KVM: arm64: Optimise FPSIMD handling to reduce guest/host thrashing")
Cc: stable@vger.kernel.org # v4.18
Cc: Dave Martin <dave.martin@arm.com>
Reported-by: Alexander Graf <agraf@suse.de>
Tested-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Marc Zyngier [Thu, 23 Aug 2018 08:58:27 +0000 (09:58 +0100)]
KVM: arm/arm64: Clean dcache to PoC when changing PTE due to CoW
When triggering a CoW, we unmap the RO page via an MMU notifier
(invalidate_range_start), and then populate the new PTE using another
one (change_pte). In the meantime, we'll have copied the old page
into the new one.
The problem is that the data for the new page is sitting in the
cache, and should the guest have an uncached mapping to that page
(or its MMU off), following accesses will bypass the cache.
In a way, this is similar to what happens on a translation fault:
We need to clean the page to the PoC before mapping it. So let's just
do that.
This fixes a KVM unit test regression observed on a HiSilicon platform,
and subsequently reproduced on Seattle.
Fixes: a9c0e12ebee5 ("KVM: arm/arm64: Only clean the dcache on translation fault")
Cc: stable@vger.kernel.org # v4.16+
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Michal Simek [Fri, 7 Sep 2018 06:02:05 +0000 (08:02 +0200)]
i2c: xiic: Record xilinx i2c with Zynq fragment
Include xilinx soft i2c controller to Zynq fragment to make clear who is
responsible for it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Rafael J. Wysocki [Fri, 7 Sep 2018 08:05:20 +0000 (10:05 +0200)]
Merge branch 'acpi-bus'
Merge ACPI core fix to avoid calling dmi_check_system() on non-x86.
* acpi-bus:
ACPI / bus: Only call dmi_check_system() on X86
Cong Wang [Tue, 4 Sep 2018 21:54:55 +0000 (14:54 -0700)]
tipc: call start and done ops directly in __tipc_nl_compat_dumpit()
__tipc_nl_compat_dumpit() uses a netlink_callback on stack,
so the only way to align it with other ->dumpit() call path
is calling tipc_dump_start() and tipc_dump_done() directly
inside it. Otherwise ->dumpit() would always get NULL from
cb->args[].
But tipc_dump_start() uses sock_net(cb->skb->sk) to retrieve
net pointer, the cb->skb here doesn't set skb->sk, the net pointer
is saved in msg->net instead, so introduce a helper function
__tipc_dump_start() to pass in msg->net.
Ying pointed out cb->args[0...3] are already used by other
callbacks on this call path, so we can't use cb->args[0] any
more, use cb->args[4] instead.
Fixes: 9a07efa9aea2 ("tipc: switch to rhashtable iterator")
Reported-and-tested-by: syzbot+e93a2c41f91b8e2c7d9b@syzkaller.appspotmail.com
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 7 Sep 2018 03:19:57 +0000 (20:19 -0700)]
Merge tag 'drm-fixes-2018-09-07' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Seems to have been overly quiet this week so I expect next week will
be more stuff, just one pull from Rodrigo with i915 fixes in it.
Quoting Rodrigo:
'The critical fix here on display side is the DP MST regression one.
But this pull also include fixes for DP SST, small VDSC register
fix and GVT's bucked with "BXT fixes, two guest warning fixes,
dmabuf format mod fix and one for recent multiple VM timeout
failure'."
* tag 'drm-fixes-2018-09-07' of git://anongit.freedesktop.org/drm/drm:
drm/i915/dp_mst: Fix enabling pipe clock for all streams
drm/i915/dsc: Fix PPS register definition macros for 2nd VDSC engine
drm/i915: Re-apply "Perform link quality check, unconditionally during long pulse"
drm/i915/gvt: Give new born vGPU higher scheduling chance
drm/i915/gvt: Fix drm_format_mod value for vGPU plane
drm/i915/gvt: move intel_runtime_pm_get out of spin_lock in stop_schedule
drm/i915/gvt: Handle GEN9_WM_CHICKEN3 with F_CMD_ACCESS.
drm/i915/gvt: Make correct handling to vreg BXT_PHY_CTL_FAMILY
drm/i915/gvt: emulate gen9 dbuf ctl register access
Linus Torvalds [Fri, 7 Sep 2018 02:35:30 +0000 (19:35 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer:
"A single change to fix booting on ColdFire platforms that have RAM
starting at a non-0 address"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: fix early memory reservation for ColdFire MMU systems
Dave Airlie [Fri, 7 Sep 2018 01:06:58 +0000 (11:06 +1000)]
Merge tag 'drm-intel-fixes-2018-09-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
The critical fix here on display side is the DP MST regression one.
But this pull also include fixes for DP SST, small VDSC register fix
and GVT's bucked with "BXT fixes, two guest warning fixes, dmabuf
format mod fix and one for recent multiple VM timeout failure."
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180905183000.GA2151@intel.com
Linus Torvalds [Thu, 6 Sep 2018 22:42:10 +0000 (15:42 -0700)]
Merge tag 'mips_fixes_4.19_1' of git://git./linux/kernel/git/mips/linux
Pull MIPS fix from Paul Burton:
"A single fix for v4.19-rc3, resolving a problem with our VDSO data
page for systems with dcache aliasing. Those systems could previously
observe stale data, causing clock_gettime() & gettimeofday() to return
incorrect values"
* tag 'mips_fixes_4.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: VDSO: Match data page cache colouring when D$ aliases
Linus Torvalds [Thu, 6 Sep 2018 22:39:11 +0000 (15:39 -0700)]
Merge tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Four small SMB3 fixes, three for stable, and one minor debug
clarification"
* tag '4.19-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: connect to servername instead of IP for IPC$ share
smb3: check for and properly advertise directory lease support
smb3: minor debugging clarifications in rfc1001 len processing
SMB3: Backup intent flag missing for directory opens with backupuid mounts
fs/cifs: don't translate SFM_SLASH (U+F026) to backslash
Peter Zijlstra [Wed, 5 Sep 2018 08:41:58 +0000 (10:41 +0200)]
clocksource: Revert "Remove kthread"
I turns out that the silly spawn kthread from worker was actually needed.
clocksource_watchdog_kthread() cannot be called directly from
clocksource_watchdog_work(), because clocksource_select() calls
timekeeping_notify() which uses stop_machine(). One cannot use
stop_machine() from a workqueue() due lock inversions wrt CPU hotplug.
Revert the patch but add a comment that explain why we jump through such
apparently silly hoops.
Fixes: 7197e77abcb6 ("clocksource: Remove kthread")
Reported-by: Siegfried Metz <frame@mailbox.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Tested-by: Kevin Shanahan <kevin@shanahan.id.au>
Tested-by: viktor_jaegerskuepper@freenet.de
Tested-by: Siegfried Metz <frame@mailbox.org>
Cc: rafael.j.wysocki@intel.com
Cc: len.brown@intel.com
Cc: diego.viola@gmail.com
Cc: rui.zhang@intel.com
Cc: bjorn.andersson@linaro.org
Link: https://lkml.kernel.org/r/20180905084158.GR24124@hirez.programming.kicks-ass.net
Linus Torvalds [Thu, 6 Sep 2018 21:01:15 +0000 (14:01 -0700)]
Merge tag 'for-linus-
20180906' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Small collection of fixes that should go into this release. This
contains:
- Small series that fixes a race between blkcg teardown and writeback
(Dennis Zhou)
- Fix disallowing invalid block size settings from the nbd ioctl (me)
- BFQ fix for a use-after-free on last release of a bfqg (Konstantin
Khlebnikov)
- Fix for the "don't warn for flush" fix (Mikulas)"
* tag 'for-linus-
20180906' of git://git.kernel.dk/linux-block:
block: bfq: swap puts in bfqg_and_blkg_put
block: don't warn when doing fsync on read-only devices
nbd: don't allow invalid blocksize settings
blkcg: use tryget logic when associating a blkg with a bio
blkcg: delay blkg destruction until after writeback has finished
Revert "blk-throttle: fix race between blkcg_bio_issue_check() and cgroup_rmdir()"
Ben Skeggs [Tue, 4 Sep 2018 05:57:11 +0000 (15:57 +1000)]
drm/nouveau/disp/gm200-: enforce identity-mapped SOR assignment for LVDS/eDP panels
Fixes eDP backlight issues on more recent laptops.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 4 Sep 2018 05:57:09 +0000 (15:57 +1000)]
drm/nouveau/disp: fix DP disable race
If a HPD pulse signalling the need to retrain the link occurs between
the KMS driver releasing the output and the supervisor interrupt that
finishes the teardown, it was possible get a NULL-ptr deref.
Avoid this by marking the link as inactive earlier.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 4 Sep 2018 05:57:07 +0000 (15:57 +1000)]
drm/nouveau/disp: move eDP panel power handling
We need to do this earlier to prevent aux channel timeouts in resume
paths on certain systems.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 4 Sep 2018 05:57:04 +0000 (15:57 +1000)]
drm/nouveau/disp: remove unused struct member
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 4 Sep 2018 05:56:57 +0000 (15:56 +1000)]
drm/nouveau/TBDdevinit: don't fail when PMU/PRE_OS is missing from VBIOS
This Falcon application doesn't appear to be present on some newer
systems, so let's not fail init if we can't find it.
TBD: is there a way to determine whether it *should* be there?
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 28 Aug 2018 04:10:42 +0000 (14:10 +1000)]
drm/nouveau/mmu: don't attempt to dereference vmm without valid instance pointer
Fixes oopses in certain failure paths.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 28 Aug 2018 04:10:34 +0000 (14:10 +1000)]
drm/nouveau: fix oops in client init failure path
The NV_ERROR macro requires drm->client to be initialised, which it may not
be at this stage of the init process.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 30 Aug 2018 17:16:28 +0000 (13:16 -0400)]
drm/nouveau: Fix nouveau_connector_ddc_detect()
It looks like that when we moved over to using
drm_connector_for_each_possible_encoder() in nouveau, that one rather
important part of this function got dropped by accident:
/* Right v here */
for (i = 0; nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER; i++) {
int id = connector->encoder_ids[i];
if (id == 0)
break;
Since it's rather difficult to notice: the conditional in this loop is
actually:
nv_encoder = NULL, i < DRM_CONNECTOR_MAX_ENCODER
Meaning that all early breaks result in nv_encoder keeping it's value,
otherwise nv_encoder = NULL. Ugh.
Since this got dropped, nouveau_connector_ddc_detect() now returns an
encoder for every single connector, regardless of whether or not it's
detected:
[ 1780.056185] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DP-2
So: fix this to ensure we only return an encoder if we actually found
one, and clean up the rest of the function while we're at it since it's
nearly impossible to read properly.
Changes since v1:
- Don't skip ddc probing for LVDS if we can't switch DDC through
vga-switcheroo, just do the DDC probing without calling
vga_switcheroo_lock_ddc() - skeggsb
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes: ddba766dd07e ("drm/nouveau: Use drm_connector_for_each_possible_encoder()")
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Tue, 7 Aug 2018 21:32:48 +0000 (17:32 -0400)]
drm/nouveau/drm/nouveau: Don't forget to cancel hpd_work on suspend/unload
Currently, there's nothing in nouveau that actually cancels this work
struct. So, cancel it on suspend/unload. Otherwise, if we're unlucky
enough hpd_work might try to keep running up until the system is
suspended.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 16 Aug 2018 20:13:13 +0000 (16:13 -0400)]
drm/nouveau/drm/nouveau: Prevent handling ACPI HPD events too early
On most systems with ACPI hotplugging support, it seems that we always
receive a hotplug event once we re-enable EC interrupts even if the GPU
hasn't even been resumed yet.
This can cause problems since even though we schedule hpd_work to handle
connector reprobing for us, hpd_work synchronizes on
pm_runtime_get_sync() to wait until the device is ready to perform
reprobing. Since runtime suspend/resume callbacks are disabled before
the PM core calls ->suspend(), any calls to pm_runtime_get_sync() during
this period will grab a runtime PM ref and return immediately with
-EACCES. Because we schedule hpd_work from our ACPI HPD handler, and
hpd_work synchronizes on pm_runtime_get_sync(), this causes us to launch
a connector reprobe immediately even if the GPU isn't actually resumed
just yet. This causes various warnings in dmesg and occasionally, also
prevents some displays connected to the dedicated GPU from coming back
up after suspend. Example:
usb 1-4: USB disconnect, device number 14
usb 1-4.1: USB disconnect, device number 15
WARNING: CPU: 0 PID: 838 at drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h:170 nouveau_dp_detect+0x17e/0x370 [nouveau]
CPU: 0 PID: 838 Comm: kworker/0:6 Not tainted 4.17.14-201.Lyude.bz1477182.V3.fc28.x86_64 #1
Hardware name: LENOVO 20EQS64N00/20EQS64N00, BIOS N1EET77W (1.50 ) 03/28/2018
Workqueue: events nouveau_display_hpd_work [nouveau]
RIP: 0010:nouveau_dp_detect+0x17e/0x370 [nouveau]
RSP: 0018:
ffffa15143933cf0 EFLAGS:
00010293
RAX:
0000000000000000 RBX:
ffff8cb4f656c400 RCX:
0000000000000000
RDX:
ffffa1514500e4e4 RSI:
ffffa1514500e4e4 RDI:
0000000001009002
RBP:
ffff8cb4f4a8a800 R08:
ffffa15143933cfd R09:
ffffa15143933cfc
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff8cb4fb57a000
R13:
ffff8cb4fb57a000 R14:
ffff8cb4f4a8f800 R15:
ffff8cb4f656c418
FS:
0000000000000000(0000) GS:
ffff8cb51f400000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007f78ec938000 CR3:
000000073720a003 CR4:
00000000003606f0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
? _cond_resched+0x15/0x30
nouveau_connector_detect+0x2ce/0x520 [nouveau]
? _cond_resched+0x15/0x30
? ww_mutex_lock+0x12/0x40
drm_helper_probe_detect_ctx+0x8b/0xe0 [drm_kms_helper]
drm_helper_hpd_irq_event+0xa8/0x120 [drm_kms_helper]
nouveau_display_hpd_work+0x2a/0x60 [nouveau]
process_one_work+0x187/0x340
worker_thread+0x2e/0x380
? pwq_unbound_release_workfn+0xd0/0xd0
kthread+0x112/0x130
? kthread_create_worker_on_cpu+0x70/0x70
ret_from_fork+0x35/0x40
Code: 4c 8d 44 24 0d b9 00 05 00 00 48 89 ef ba 09 00 00 00 be 01 00 00 00 e8 e1 09 f8 ff 85 c0 0f 85 b2 01 00 00 80 7c 24 0c 03 74 02 <0f> 0b 48 89 ef e8 b8 07 f8 ff f6 05 51 1b c8 ff 02 0f 84 72 ff
---[ end trace
55d811b38fc8e71a ]---
So, to fix this we attempt to grab a runtime PM reference in the ACPI
handler itself asynchronously. If the GPU is already awake (it will have
normal hotplugging at this point) or runtime PM callbacks are currently
disabled on the device, we drop our reference without updating the
autosuspend delay. We only schedule connector reprobes when we
successfully managed to queue up a resume request with our asynchronous
PM ref.
This also has the added benefit of preventing redundant connector
reprobes from ACPI while the GPU is runtime resumed!
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Cc: Karol Herbst <kherbst@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=
1477182#c41
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 9 Aug 2018 22:22:06 +0000 (18:22 -0400)]
drm/nouveau: Reset MST branching unit before enabling
When probing a new MST device, it's not safe to make any assumptions
about it's current state. While most well mannered MST hubs will just
disable the branching unit on hotplug disconnects, this isn't enough to
save us from various other scenarios that might have resulted in
something writing to the MST branching unit before we got control of it.
This could happen if a previous probe we tried failed, if we're booting
in kexec context and the hub is still in the state the last kernel put
it in, etc.
Luckily; there is no reason we can't just reset the branching unit
every time we enable a new topology. So, fix this by resetting it on
enabling new topologies to ensure that we always start off with a clean,
unmodified topology state on MST sinks.
This fixes occasional hard-lockups on my P50's laptop dock (e.g. AUX
times out all DPCD trasactions) observed after multiple docks, undocks,
and module reloads.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Cc: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>